Swallowtail Butterfly (Ai no Uta)

"Swallowtail Butterfly (Ai no Uta)"
Single by Yen Town Band (Chara)
from the album Montage
B-side	"Mama's Alright"
Released	July 22, 1996 (1996-07-22)
Genre	J-pop
Length	4:49
Label	Sony Music Japan
Songwriter(s)	Chara, Shunji Iwai, Takeshi Kobayashi, Takayo Nagasawa, Bryan Burton-Lewis
Producer(s)	Takeshi Kobayashi
Yen Town Band (Chara) singles chronology
"Tiny Tiny Tiny" (1995) "Swallowtail Butterfly (Ai no Uta)" (1996) ""Chara no Boogie Shoes" with The 99 1/2" (1996)

"Swallowtail Butterfly (Ai no Uta)" (あいのうた, Suwarōteiru Batafurai Ai no Uta, "Love Song") is a song by Chara, released under the name Yen Town Band.^[1] It was the lead single from Montage, a concept album released for the Shunji Iwai film Swallowtail Butterfly that also starred Chara. This song was used as the theme song for the film.

The single debuted at #31 on Oricon's singles charts. Two months later, after the release of the film and album, the single managed to reach #1.^[2]

The song was written by Takeshi Kobayashi, in collaboration with Chara and film director Shunji Iwai.